Description
SEI 116-1.81
- Mercruiser Alpha 1 Generation 2 replacement upper unit.
- 1991 and up models with 4.3 liter V6 motors.
- 1.81 gear ratio with a 17-19 tooth count.
- Works with 4.3L and 4.3LX models
- Serial numbers 0D470000 and up
- Comes with u joints and output shaft
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